<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin:0;
            padding: 0;
        }
        div{
            position: absolute;
            width: 100px;
            height: 100px;
            background: red;
        }
    </style>
</head>
<body>
     <div>我是p标签</div>
</body>
</html>
<script>
    let element = document.querySelector('div');
    let l = 0;
    setInterval(()=>{
     l+=10;
     element.style.left = l+'px'
    },100)
</script>